The calculator shown below is based on data in the 1957 edition of “The Effects of Nuclear Weapons”. The images are of the second version of the calculator. Version one of the calculator was designed by EG & G. Versions two and three were designed by the Lovelace Foundation. See my post which shows all three versions.
The revised edition of “The Effects of Nuclear Weapons” could be purchased with V3  calculator. Version two just came with a pamphlet. This is reproduced below.
This particular calculator was issued to an engineer at the Rocky Mountain Arsenal outside Denver, Colorado.
For more posts about Cold War calculators click on the Cold War Calculators category on the right.